"Scooby Doo Arms".

Hey everyone. My team and I can’t seem to figure this out. All of the past models I made for the game seem to be doing okay, but the last three have had this problem:

The arms pinch and bend at the wrists. It doesn’t seem to be a skin weight problem in Maya, and I’ve done to these last three models the same as I’ve done to the previous ones. But since three models ago, every time we assign SK_Mannequin_PhysicsAsset to the characters this happens. We had to disable the physics for a demo so that this wasn’t showing. We’re using a physical animation system. Do you have any ideas on what this may be?

This exact thing happens to me when i use the wrong animations for a skeleton or better when the imported skeleton is not 100% identical to the sk mannequin or when i do a mistake while retargeting.